Bullet Class Reference

#include <bullet.hpp>

Inherits MovingObject.

List of all members.

Public Member Functions
	Bullet (const Vector &pos, float xm, int dir, BonusType type)
	~Bullet ()
void	update (float elapsed_time)
	This function is called once per frame and allows the object to update it's state.
void	draw (DrawingContext &context)
	The GameObject should draw itself onto the provided DrawingContext if this function is called.
void	collision_solid (const CollisionHit &hit)
	this function is called when the object collided with something solid
HitResponse	collision (GameObject &other, const CollisionHit &hit)
	this function is called when the object collided with any other object
void	ricochet (GameObject &other, const CollisionHit &hit)
	Makes bullet bounce off an object (that got hit).
BonusType	get_type ()
Private Attributes
Physic	physic
int	life_count
SpritePtr	sprite
BonusType	type

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Detailed Description

Definition at line 25 of file bullet.hpp.

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Constructor & Destructor Documentation

Bullet::Bullet	(	const Vector &	pos,
		float	xm,
		int	dir,
		BonusType	type
	)

Definition at line 28 of file bullet.cpp.

References MovingObject::bbox, BULLET_XM, SpriteManager::create(), FIRE_BONUS, ICE_BONUS, life_count, log_warning, physic, RIGHT, Rectf::set_pos(), Rectf::set_size(), Physic::set_velocity_x(), sprite, and sprite_manager.

                                                                   :
  physic(),
  life_count(3), 
  sprite(),
  type(type)
{
  float speed = dir == RIGHT ? BULLET_XM : -BULLET_XM;
  physic.set_velocity_x(speed + xm);

  if(type == FIRE_BONUS) {
    sprite = sprite_manager->create("images/objects/bullets/firebullet.sprite");
  } else if(type == ICE_BONUS) {
    life_count = 10;
    sprite = sprite_manager->create("images/objects/bullets/icebullet.sprite");
  } else {
    log_warning << "Bullet::Bullet called with unknown BonusType" << std::endl;
    life_count = 10;
    sprite = sprite_manager->create("images/objects/bullets/firebullet.sprite");
  }

  bbox.set_pos(pos);
  bbox.set_size(sprite->get_current_hitbox_width(), sprite->get_current_hitbox_height());
}

Bullet::~Bullet

(

)

Definition at line 52 of file bullet.cpp.

{
}

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Member Function Documentation

void Bullet::update

(

float

elapsed_time

)

[virtual]

This function is called once per frame and allows the object to update it's state.

The elapsed_time is the time since the last frame in seconds and should be the base for all timed calculations (don't use SDL_GetTicks directly as this will fail in pause mode)

Implements GameObject.

Definition at line 57 of file bullet.cpp.

References Sector::camera, Sector::current(), Physic::get_movement(), MovingObject::get_pos(), Camera::get_translation(), life_count, MovingObject::movement, physic, GameObject::remove_me(), SCREEN_HEIGHT, SCREEN_WIDTH, Vector::x, and Vector::y.

{
  // remove bullet when it's offscreen
  float scroll_x =
    Sector::current()->camera->get_translation().x;
  float scroll_y =
    Sector::current()->camera->get_translation().y;
  if (get_pos().x < scroll_x ||
      get_pos().x > scroll_x + SCREEN_WIDTH ||
      //     get_pos().y < scroll_y ||
      get_pos().y > scroll_y + SCREEN_HEIGHT ||
      life_count <= 0) {
    remove_me();
    return;
  }

  movement = physic.get_movement(elapsed_time);
}

void Bullet::draw

(

DrawingContext &

context

)

[virtual]

The GameObject should draw itself onto the provided DrawingContext if this function is called.

Implements GameObject.

Definition at line 77 of file bullet.cpp.

References MovingObject::get_pos(), LAYER_OBJECTS, and sprite.

{
  sprite->draw(context, get_pos(), LAYER_OBJECTS);
}

void Bullet::collision_solid

(

const CollisionHit &

hit

)

[virtual]

this function is called when the object collided with something solid

Reimplemented from MovingObject.

Definition at line 83 of file bullet.cpp.

References CollisionHit::bottom, Physic::get_velocity_x(), Physic::get_velocity_y(), ICE_BONUS, CollisionHit::left, life_count, physic, GameObject::remove_me(), CollisionHit::right, Physic::set_velocity_x(), Physic::set_velocity_y(), CollisionHit::top, and type.

Referenced by ricochet().

{
  if(hit.top || hit.bottom) {
    physic.set_velocity_y(-physic.get_velocity_y());
    life_count--;
  } else if(hit.left || hit.right) {
    if(type == ICE_BONUS) {
      physic.set_velocity_x(-physic.get_velocity_x());
      life_count--;
    } else
      remove_me();
  }
}

HitResponse Bullet::collision	(	GameObject &	other,
		const CollisionHit &	hit
	)			[virtual]

this function is called when the object collided with any other object

Implements MovingObject.

Definition at line 104 of file bullet.cpp.

References FORCE_MOVE.

{
  return FORCE_MOVE;
}

void Bullet::ricochet	(	GameObject &	other,
		const CollisionHit &	hit
	)

Makes bullet bounce off an object (that got hit).

To be called by the collision handler of that object. Note that the hit parameter is filled in as perceived by the object, not by the bullet.

Definition at line 98 of file bullet.cpp.

References collision_solid().

Referenced by Igel::collision_bullet(), and BadGuy::collision_bullet().

{
  collision_solid(hit);
}

BonusType Bullet::get_type

(

)

[inline]

Definition at line 43 of file bullet.hpp.

Referenced by BadGuy::collision_bullet().

  {
    return type;
  }

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Member Data Documentation

Physic Bullet::physic [private]

Definition at line 49 of file bullet.hpp.

Referenced by Bullet(), collision_solid(), and update().

int Bullet::life_count [private]

Definition at line 50 of file bullet.hpp.

Referenced by Bullet(), collision_solid(), and update().

SpritePtr Bullet::sprite [private]

Definition at line 51 of file bullet.hpp.

Referenced by Bullet(), and draw().

BonusType Bullet::type [private]

Definition at line 52 of file bullet.hpp.

Referenced by collision_solid().

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The documentation for this class was generated from the following files:

• src/object/bullet.hpp
• src/object/bullet.cpp

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